Electric heater.



R. FARBEN & C. T. CLARK.

ELECTRIC HEATER. APPLIoATIoN FILED D110. a, 1908.

Patented Dec. 14, 1909.

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R. FARREN & G. T. CLARK.

ELECTRIC HEATER.

APPLICATION FILED Dnc. 3, 190s.

2 sums-SHEET 2.

Patented Dec. 14

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`ROBERT FARREN AND CHARLES T. CLARK, OF CLEVELAND. OHIO.

ELECTRIC HEATER.

Specification of Letters Patent.

Patented Dee. 14, 41909.

Application filed December 8, 1908. Serial No. 465,809. v

in any form of water heating` system,v such vcasing is securely y culatin'g pipe and opens at its lower endv into the bottom,

- of the chamber.

v sleeve 5 as those used in residences, cars, green houses and the like; also capable of use for domestic purposes.

The object of the invention is to form a device improved with respect to the construction of the heater, with advantages as to the mode of circulating the fluid around the .heating coils, whereby the Huid is ex posed to the influence thereof at both the inside and the outside of said coils.

An embodiment of the invention is illustrated in the accompanying drawings in which- Figure l 1s a side elevation. partlv in secs n V tion, of the heater. Fig. 2 is a top plan view. Fig. 3 is a section on the line 3-3 of Fig. 1. Fig. 4 is a. side elevation showing the electric heater applied to a house radiator.

Referringspecifically to the drawings., 1'

indicates a cylindrical outer casing forming a water chamber and having inlet and -outlet pipes 2 and 2a. The electric heating devices are located or mounted within said chamber. The inlet pipe 2 is tapped into the bottom of the casing. At the top the casin Ahas a central enlargementl or upward y projecting portion into which the outlet pipe 2a is tapped.'

Each of the heaters consists of an outer metallic casing bushing 3 in which the upper.. end of the fastened. This bushing screws into a tapped hole formed to receive the same in the to'p of the casing.Y A cir- 6 extends through the casing part of the waterchamber, and at its upper end is vconnected-by anelbow and suitable coupling 9 to the. upper part or dome 20 The heating coil 7. is located in the space-between the cylinder 4 and the ipe 6, a non-electric conducting ing placed over oraround the 4 supported by a threaded.

pipe 6, the coils being embedded in insulating material between the sleeve 5 and the outer tube 4. -The coils are connected in series by suitable wires 1Q., having leads to the source of current.

lVater contained in the chamber will circ`ulate around the tubes 4 which will be heated by the coils therein, and the heat communicated to the water. Some of the water will also be heated in the tubes 6 and flow up through the same and into the top of the casing and thence to the outlet. The material 5 will insulate the tubes 6 from the coils, but will allow the heat to pass through the same to the water in said pipes. through the chamber l from the inlet pipe 2 to the o'utlet pipe 2t, receiving its heat from the outside of the heating dbevice', and the remainder will flow up through the tube 6 and be heated Within thev coils. This prowater forI the communication of heat thereto without interfering with the further circulation of the water.

In Fig. 4 the device is shown applied to a house radiator 5, the heater being inserted .in the lower opening of the' radiator and having a circulating pipe 4 with suitable connections.

The number of coils in the chamber may be varied as desired,and anycoil can be removed by unscrewing the coupling 9 and the bushing 3, allowing the coil and connecting )ipe to be lifted out.

' lh e claim:

1. An electric heater comprising a chamvides an vadvantageous circulation of the.

ber, a bushing tapped into a wall thereof, a

tubular casing fastened to the bushing and projecting into the chamber, a pipe extending lengthwise through the bushing from the exterior of the chamber and opening into the same at both'ends and having an exterior detachable coupling, and a resist-ance coil between the pipe and the casing,

2. An electric heater comprising a chamber having a central raised part or dome, and a plurality of heating devices projecting into the body of the chamber and including circulation pipes leading from the lower part of the chamber with 'exterior detachable couplings to the dome.

3. An electric heater comprising a` chamber having at its top a central raised part or dome, andl providedwith, inlet and outlet pipes leading into its said dome, and into its base, respectively, bushings tapped into said pipes and their casings, said coils bethc top of said chamber around said dome lng connected in series. tubular casings fastened to, and haylng' In testimony whereof, we alix our signatheir upperends closed by, said bushlllngs', tures 1n presence of two witnesses. 5 and projectino downwardly into the c am'- ber, pipes extending outwardly from 4said ROBERT FARBEN dome and downwardly through said bush- CHARLES T CLARK ings and casings, and provided with exterior Witnesses: couplings located between said dome and LOUIS PREssLnR,

10 said bushings7 yand resistance coils between Jol-IN A. BoMMl-IARDT. 

